"We could get some high winds, and if you decide to do it on Thursday when it's real windy, it's a lot harder," said McNally.

Kevin Mitchell was also concerned. He spent the morning securing his boat.

"We're loading the boat with fuel so it will make it a little bit heavier so that the bottom of the boat sits in the water so when the waves surge, it'll help secure the boat," said Mitchell.

The owner of Captain Joe's Water Taxi at the Riviera Beach Marina isn't just hopeful for the best. He wants Irene to wash away all the jellyfish.

"My biggest problem's the jellyfish," Mitchell said. "The jellyfish are everywhere out there for three weeks, so we've been advising everyone not to go because it's not safe to get in the water out there, and I don't know if that had something to do with Emily or this storm coming by."

Marina operators have also moved dive tanks indoors, removed canvass awnings and tied down garbage cans.